Andy Morgan: the war on music in Mali

Andy Morgan writes for The Guardian and knows the desert music of Mali very well. He's helped organise the famous Festival of the Desert and is writing a book on the Grammy winning Touareg band Tinariwen. He talks to us from the UK about how extremist religious groups are moving into the desert areas of Mali, terrorising musicians and banning music in a country where it's akin to 'mineral wealth'.